Almost a billion dollars flowed into Bitcoin ETFs in one day
Physical Bitcoin ETFs in the US recorded a net inflow of approximately $999 million on September 21, one of the largest capital inflows recorded in the past year.
According to the latest data from Farside Investors, almost all major ETFs saw positive inflows, indicating broad demand rather than a specific inflow into one or two products.
BlackRock IBIT $IBIT: inflow of +$381.4 million
Fidelity FBTC $FBTC: inflow of +$238.8 million
Ark Invest ARKB $ARKB: inflow of +$289.1 million
Bitwise BITB $BITB: inflow of +$21.6 million
Morgan Stanley MSBT $MSBT: inflow of +$61.7 million
Grayscale GBTC $GBTC: inflow of +$33 million
Grayscale Mini BTC: inflow of +$31 million
The three funds from BlackRock, Fidelity, and ARK Invest together accounted for approximately $909.3 million, about 91% of the total daily inflow.
The inflow of approximately $999 million is the largest since October 6, 2025, when an inflow of approximately $1.25 billion was recorded, which was one of the largest daily inflows in the history of Bitcoin ETFs.
What is interesting this time is not just the amount, but also the breadth of the inflow; almost all major products received new capital on the same day.
When capital of this magnitude flows into ETFs, it indicates significant demand for Bitcoin exposure through the traditional investment system, especially when the inflows come simultaneously from several large asset managers.